This screen shot shows the home page for Spotify.com. The service brings free, ad-supported access to more than 15 million songs on computers, while ad-free versions of the service cost $5 or $10.(AP Photo)

Spotify

•September 29, 2011

Streaming service Spotify is adding "Private Listening" mode. CEO Daniel Ek announced via Twitter, “We’re rolling out a new client as we speak where you can temporarily hide your guilty pleasures. It works like a browser’s private mode.” (Sept. 29)